EARTHQUAKES · HOWARD AREA · TX2023CLIF

Magnitude 2.3 7 km WNW of Westbrook, Texas

Saturday, February 4, 2023, 9:41:48 AM Central · 2023-02-04 15:41:48 UTC

A magnitude 2.3 earthquake 7 km WNW of Westbrook, Texas on February 4, 2023 at 9:41 AM Central, 8.5 km deep, in the Howard County area.

It is one of 39 M2+ events located within 10 km of this spot, 1 of them in the thirty days before it; the largest nearby was M4.3.

15 active injection or disposal wells sit within 10 km, the nearest 0.4 km away and operated by GTG Operating, LLC; together they hold 8,500 barrels a day of permitted capacity.

9 of the nearby wells report daily to TexNet; they injected 9,635 barrels a day in August 2026.

M2.3
ML, reviewed
8.5
km deep · 28,002 ft
1
M2+ within 10 km, prior 30 days
39
M2+ within 10 km, all time
15
active injection wells within 10 km
66
permitted wells within 10 km

Location

Epicenter
32.3813, -101.0839
County area
Howard County
On a map
Google Maps ↗
Catalog
USGS event page ↗ · TexNet catalog ↗

Around it in time and space

M2+ events within 10 km, nearest in time first.

WhenMagDistanceDepth
Feb 4, 2023, 5:55 AM2.00.7 km7.0 km
Sep 30, 2022, 8:16 AM2.42.4 km10.0 km
Sep 30, 2022, 3:04 AM2.81.5 km7.9 km
Aug 12, 2022, 1:25 PM2.07.4 km6.3 km
Sep 18, 2023, 8:10 PM2.37.3 km8.7 km
Sep 18, 2023, 10:07 PM2.37.3 km9.0 km
Oct 12, 2023, 10:27 PM2.86.3 km12.0 km
Jan 17, 2024, 8:31 PM2.19.4 km8.7 km
Mar 1, 2024, 7:11 AM2.19.5 km5.0 km
Mar 1, 2024, 10:07 AM2.58.9 km8.5 km
Mar 3, 2024, 3:07 AM2.18.6 km4.9 km
May 23, 2024, 3:31 PM2.84.1 km4.3 km

Largest nearby on record: M4.3 on Oct 12, 2025.

Injection wells within 10 km

RRC UIC MASTER · ACTIVE PERMITS

Proximity is not attribution. The wells are listed because the question is always asked; whether any of them is connected to this event is for the RRC's seismic response review, not this page. 9 of these report daily to TexNet: 9.64K bbl/d in Aug 2026.

WellOperatorUIC no.DistancePermitted, bbl/dInjection zone, ft
Turner Gregory Unit #2202WGTG Operating, LLC0000905130.4 km5002,385–2,808
Westbrook Southwest Unit #37Grayrock Energy II, LLC0000996390.5 km7002,300–3,300
Westbrook Southwest Unit #131IGrayrock Energy II, LLC0000987890.5 km5002,300–3,400
Westbrook Southwest Unit #311AWGrayrock Energy II, LLC0000980820.7 km7002,300–3,300
Westbrook Southwest Unit #312Grayrock Energy II, LLC0000463140.7 km5002,300–3,300
Westbrook Southwest Unit #38Grayrock Energy II, LLC0000982190.8 km7002,300–3,300
Westbrook Southwest Unit #110Grayrock Energy II, LLC0000985150.8 km5002,300–3,300
Westbrook Southwest Unit #134Grayrock Energy II, LLC0000985160.9 km5002,300–3,300
Westbrook Southwest Unit #142WGrayrock Energy II, LLC0000994761 km7002,300–3,300
Westbrook Southwest Unit #422WGrayrock Energy II, LLC0000430821 km7002,300–3,300
Morrison -G- #19WGrayrock Energy II, LLC0000876061 km4002,400–3,300
Westbrook Southwest Unit #126Grayrock Energy II, LLC0000985141.1 km5002,300–3,300
Westbrook Southwest Unit #16WGrayrock Energy II, LLC0000463101.1 km5002,300–3,300
Westbrook Southwest Unit #145WGrayrock Energy II, LLC0000997611.3 km7002,300–3,300
Morrison -G- #27WGrayrock Energy II, LLC0000876091.3 km4002,400–3,300

Disposal in Howard County → · How disposal permits and volumes work →

About this data

Event tx2023clif from the USGS earthquake catalog, located by TexNet (UT Bureau of Economic Geology) and refreshed daily. Nearby wells from the RRC UIC well master and permit coordinates; daily volumes from the TexNet injection reporting tool.

Developers: this page as JSON is GET /v1/data/earthquakes/tx/events/tx2023clif, documented in the API reference.